GCH-S4820: Storage battery charger Input voltage: 160 270VAC, 45 450Hz 220~370VDC Charge battery: 48V(5~400Ah) Charge current: 2~20A Constant adjustable We can offer all kinds of batteries(storage battery, li-ion battery, Ni-MH, Ni-CD battery) charger. For exact item and more details pls contact with us. Thanks!